No. It sets an opcode in the DNG file to tell whatever file is processing the image to map out bad pixels.

So does it assume that the image processing software has a file with the bad pixel map ? Or is the map imbedded in the DNG ?

The opcode tells the processing software what sensor pixel value to treat as a 'bad' pixel (CHDK uses a value of 0). It's up to the software to decide how to map out the bad pixels.

Quote

Quote

So far it seems only Adobe software has implemented support for DNG 1.3.

So does other s/w fail to read 1.3 files ? Which might imply we have come almost full circle back to not being able to read CHDK RAW if so ...

No, the CHDK DNG files are set with the 'backward compatible' version to 1.1.The DNG standard specifies that processing software that does not understand the new stuff can ignore it.This is what happens with other software (e.g. RawTherapee) - it loads the DNG files; but does not fix the bad pixels.